Difference between USB versions v2.0 v3.0 v4.0
The name USB stands for Universal Serial Bus, the standard specifications designed to provide High speed communication using wires between devices. The USB cable will connect two devices using USB ports. Now-a-days wireless USB standard also have been developed which does not need USB cable and works on RF waves. This Wireless USB competes with Bluetooth technology designed for the same application. There are two types of USB slots provided on the devices referred as Type-A and Type-B.
Over the years difference USB versions have been evolved which include v2.0,v3.0 and v4.0. This page compares these versions and describes the difference between USB v2.0,v3.0 and v4.0 them. USB 1.x supported data rate of 12 Mbps at full bandwidth.
USB 2.0
Transfer rate/speed: 480 Mbps
Power consumption: 100 mA
Backward compatibility: USB 1.x
Smart charging not available
Bidirectional data transfer not supported
USB 3.0
Transfer rate/speed: About 5 Gbps
Power consumption: 900 mA
Backward compatibility: USB 2.0, USB 1.x
Bidirectional data transfer is supported
Smart charging available
USB 4.0
Transfer rate/speed: 10000 Mbps
Backward compatibility with previous versions
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